Rotary oil burner



Dec. 11, 1928. 1,695,030

J. SCHEMING ER, JR

ROTARY OIL BURNER Filed ma 10, 1926 Patented- Dec. 11, 192a UNITED PTENT O I JOHN sonnmmenn, an, or rRovInENcE, nnonn ISLAND;

ROTARY OIL BURNER.

Application filed May 10,

This invention relates to oil-burners and more particularly to domesticburners or heaters of'the type characterized by rotary burner may becompletely consumed 'andthus prevent the waste or loss which usuallyresults from the escape of combustible gases or disintegrated fuelparticles which are liberiated before complete combustion has taken ace.

p The invention will first be hereinafter more particularly described,with reference to the accompanying drawings, which are'to be taken as apart of this specification. and

then pointed ,out in the claims at the-end of the description;

In said drawings,-Fig. 1 is a vertical sec-' tional elevation takendlametrically through the fire-box and rotary distributing head of' anapparatus embodying my, invention;

Fig. 2 is a perspective view of one of the-- bricks used in'theconstruction of 7 what I term the fire-deck and Fig. 3 is aperspective view of another form of fireib'rick adapted-for use. inthecon-.

struction of the vertical'wall or fire-ring surrounding said fire-deck.

In said drawings,-the numeral 1 denotes the innerwall of the furnace orfire-box havin'g mounted centrally therein" a tubular shaft 2 containingan ordinary liquid fuel '45 feed pipe 3 having secured on its-upper endan inverted cup-like'device 4 adaptedto distributeoil discharged fromsaid pipe upon a rotating distributing plate 5', fi'xed on the i shaft2' and preferably dish-shaped or con.- cave on the upper. sidethereoffor'co-opera tion with. a superposed c0ver-plate or't'op' outsimilar form invertedpan d supported upon and in opposed relation to=sairanged with their corresponding marginal .fi'rstnamed plate, asshown,-orby 'any'suitabl'ef. means,,s'o'that theopposed platesmay be ar-1926. Serial No. 108,191.

edges spaced apart sufficiently to provide a restricted peripheraloil-dischargfe'passage surrounding the distributing device and sub.-acent concave surface of the aforesaid distributing plate 5. Underneaththe distributing plate 5 are secured a'series or plurality of radial fanblades 8, whose lower edges are secured to a bottom plate 9 havng a.central opening 10 therein through which the shaft 2 extends; said partsforming a distributing head with a type of-under-.

slung fan similar to that shown and described in Letters Patent No.1,569,580

granted January 12, 1926, for improvements 1n oil distributing heads forrotary oil burners,which is a preferred form, though other forms maybeused. Suitably supported below the burner-head is an annular metal plateor ring 11 which in turn supports an annular metallic-plate of angularform in cross-section formed with a .slightly sin-- .wardly inclinedsubstantially horizontal portion 12, having a depending annular marg1nalflange 13, which fits snugly within the ring 11, and an upright annularportion 14 which surrounds and forms a support or abutment for thevertical wallsurrounding .the fire-deck. The opening through the annularflange 13 of the angular fire-decksuprporting plate or ring is slightlylarger thana the bottom plate 9 of the distributing head to permit thepassage. of air upwardly around the periphery ofsaid bottom platefire-deck as hereinafter described. The space betweenthe annularvertical member bridged and sealed in the. usual manner'by a ,fireclayor cement body 18 which is supported by'and between said wall and acirinto an air duct under the bottom of the 14.01? the fire-decksupporting ring andth'e inner wall of the furnace or fireebox iscumferential rib or shoulder 15 on the outer side of said supportingring, as shown. fire-deck comprises a circular series of correspondinglyshaped segmental fire-brlcks "19015 the form shown in Fig. 2, supporteda upon the horizontal'inwardly inclined portion 12 of the annularmetallic support 1n such manner that the inner ends of the series ofbricks project inwardly'past the air passage between the central opemng1n the part 12 of the supporting plate and the outeredge ofthe bottomplate 9 of the fan structure ofthe rotating head; The fire-bricks 19 areeach formed with a supporting rib or ribs. 20 ,on'the bottom or underside thereof,

so as to provide radially extending supports spaced apart sufficientlyto provide air ducts between pairs of ribsin communication with the airpassage between the outer edge of the distributing plate 9 and theflange 13 of the firejdeck-supporting plate. The outer seated upon thebricks 19 in said recesses 21,

so as to form an upright wall or fire-ring within the upright part 14 ofthe fire-decksupporting ring. The inner ends of the fire-brick 19 arebeveled orinclined on the upper side thereof as at 23, so that when thecircular series of bricks are laid in assembled relation to form thefire-deck, said beveled portions will form the lower upwardly inclinedwall of an annular air passage between .the inner ends of the fire-brickand the underside of the distributing plate 5, which forms the upperwall of the last named air passage which, as shown, is en larged towardthe receiving end thereof and decreases in size toward the outlettherefrom. The lower inwardly extending bev: eled end-portions of thefire-brick closely surround the outer sides of'the fan blades 8 at apoint between the upper and lower edges of said blades so as to providean annular lip-portion 24 of the fire-deck over-hanging the outer edgeof the bottom clined or converge inwardly so that the adjaplate 9 of thedistributing head or fan structure carried thereb The fire-bricks 25 areof the segmental orm shown in Fig. 3 of the drawings, their front facesbeing slightly concave and the front upper. edges thereof being beveled,as at 26, and the are each formed with one or more ribs 2 spaced apartcorresponding with the spacing'of the ribs 20 on the fire-bricks 19, soas to provide vertical air ducts or channels 28 in communication withthe ducts or channels between the ribs 20 of the bricks forming thefire-deck. It will be seen that the rear ends of the fire-bricks 19' areslightly removed or spaced from the vertical wall 14 of the metallicsupporting plate to an extent equalling the width of the ribs 27 on thebricks 25 so as to provide a duct or .channel around the interconnectedends or corners of the two rows of bricks of the same depth as thechannels between adjacent ribs, so that the channel 28 is continuous andof uniform size or dimensions from the inlet end of the horizontalportion to the exit end of the upright part. It will be understood ofcourse that opposite sides of the individual bricks of both thefire-deck and the vertical wall or fire-ring series are incent sides ofthe bricks in each series contact the full length thereof when thebricks are laid in circular series around the distributing head. v Apilot light 30 is shown protruding up through the fire-deck and disposedwithin the fire-ring for initially igniting the mixture of oil and airand starting the burner, as heretofore in rotary oil burners.

In operation, it will be seen that upon rotation of the distributinghead air will be I drawn into the fan through the central opening 10 ofthe bottom plate 9, and discharged outwardly from the fan blades 8, asindicated by arrows in Fig. 1. At the same time that air is being thusdischarged, oil is also being discharged from the distributing headthrough the channel 7, and is sup orted and carried outwardly by the airdisc arged between the distributing plate 5 and the upper beveled edgeof the fire-deck 19. This mixture of oil and air is ignited by the pilotlight 30 and the travel thereof and the consequent combustion is in adirection upward- 1y within and over the top of the fire-ring.

Due to the plate 9 of the distributing head being overhung by the lip24' of the fire-deck 19, a certain portion of the air discharged by ,thefan blades 8, finds its way through which point it isintroduced into themixture of ,air and oil reviously mentioned, and which at this point isin process of combustion and serves to supplement air already in use andto extend and'prolong the general period of combustion and thereby morethoroughly consume the fuel units, thus preventing the escape from thefire box of unconsumed fuel.

It will be understood-that various changes in the details andarrangement of partsmay be made without departing from the spirit andscope of m invention, since various combinations an sub-combinations maybe made to meet working requirements or conditions, and I therefore donotdesire to be limited by the appended claims to the specific structurehereinbefore illustrated and described; such structure being merelyillustrative of a preferred embodiment of my in-' vention, andvariouschanges ma obviously .spaced air ucts extending outwardly thereunder andupwardly therefrom around thecombustion c amber, an oil distributingdevice revolubly mounted within said opening and having a restrictedperipheral passage for discharging atomized oil, whereby a film of oilis caused to issue from said device over the surface of said fire-deck,a feedpipe, and means associated with said device for inducing anupwardly and outwardly moving current of air and dividing and forcingthe same partly into and through said air ducts and a larger part underthe filmof oil issuing from said device. 2. In combination with afire-box, an annular fire-deck having mounted on the outer marginthereof an annular upright fire-ring;

, said fire-deck having a central opening therein andair ducts extendingoutwardly thereunder, and said fire-ring having] on the outer ,sidethereof air ducts extending upwardly from the ducts under said fire-ringin spaced relation around the combustion chamber, a centrifugal oildistributing device revolubly mounted within said central opening,whereby a film of oil is'caused to issue from said device over thesurface of said'fire-deck, and means for inducing a current of air anddividing and forcing the same partly into and through said air: ductsand a larger part under the filmof oil issuing from said dis tributingdevice. a

3. In combination with the fire-box of a rotary .oil burner, an annularsubstantially horizontal fire-deck having mounted on the outer marginthereof, an annular upright fire-ring, an annular metallic plate ofangular form in cross-section forming a support for said fire-deck andfire-ring; said sup-.

tending in circular series around the combuse tion chamber, and meansfor inducing a current of air and dividing and forcing the same partlyinto and through said air ducts and out therefrom directly into thecombustill rotary ward y tion chamber and a larger part under the filmof oil issuing from said distributing de-v vice. V v

4. In combination with the fire-box of a oil burner, an. annularslightly inand downwardly inclined fire-deck, an annular uprightfire-ring mounted on the upper outer margin of said fire-deck, thelatter having a central opening therein, a centrifugal oil distributingdevice revolubly mounte fire-deck, air ducts extending outwardly undersaid fire-deck and upwardly on the outer side of said fire-ring, asupport for said fire-deck and fire-ring having a slightly inwardly anddownwardly inclined portion and an upright portion forming the outerwithin the opening through said spaced apart around the combustionchamber, and means for inducing a current ofair and forcing apartthereof into and through said air ducts and a larger part under a wallsof said air ducts, the latter being film of oil issuing from saiddistributing device over the surface of said fire-deck' 5. Incombination with the fire-box of a rotary oil'burner, a fire-deckprovided with a central opening therein and a rotary oil distributingdevice revolubly mounted within said opening; said fire-deck consistingof a circular series of substantially horizontal fire-bricks havingsupported thereon a circular series of substantially 7 verticalfirebricks formingv a vertical wall surrounding said distributing devicesaid bricks having longitudinal ribs on the backs thereof 1 seatedagainst horizontal and Vertical portions of a metallic plate supportingsaid firedeck and fire-ring and forming the outer walls of air ductsbetween spaced ribs.

6. A fire-deck for the fire-box of a rotary oil burner comprising acircular series of substantially rectangular fire-bricks placed side byside around a central opening and having spaced ribs on their undersidesresting upon a subjacent support and forming in connection therewithsubstantially horizontal spaccdair ducts between said ribs,

and a fire-ring extending around said firedeck and means associatedtherewith to provide vertical air ducts in communication with saidhorizontal air ducts.

'7. A fire-deckfor the fire-box of a rotary oil burner comprisingsubstantially rectangular fire-bricks placed side by side in circularseries and having spaced ribs on their undersides resting upon asubjacent support and forming in connection thereing mounted on theupper outer margin thereof a similarly constructed series offire bricksforming avertical fire-ring with spaced air ducts betweenit. and averticalportion of said support so as to form. contmuations of saidhorizontal ducts.

.105 with substantially horizontal spaced iair ducts between said ribs;said fire-deck--l1m7-.

8. in combination with the fire-box of a rotary oil burner, a fire-deckcomprising a circu ar series of substantially rectangular fire bricksvplaced side by side around a central opening and having spaced ribs onthe undersides thereof resting upon a subjacent support and forming inconnection therewith substantially horizontal air ducts, a verticalfire-ring supported on said fire-deck and having vertical ribs arrangedto provide-air ducts between it'and a vertical portion of said supportin communication with said horizontal air ducts, a centrifugal oildistributing device revolubly mounted Within .said (ipening and .ada tedto" discharge, a

film 0 oil over the sur ace of said fire-deck,

and means associated withsaid device for h inducin a current of airandforcing a part thereof into and through said air ducts and another (partunder the film of oil issuing from sai device.

9. In combination with the fire-box of a liquid fuel burner, a metallate havingm centrally disposed opening t erein and an approximatelyhorizontal portion and a substantially vertical portion adapted to formrespectively the lower and outer walls of a file-deck supported on saidplate, a liquid fuel distributing device revolubly mounted within saidopening, a fire-deck mounted on said platenconsisting of a series ofsubstan tially horizontal disposedfire-bricks extend ing around saidopening, and a fire-ringconsisting of a series of substantiallyvertically disposed fire-bricksforming a vertical wall extending aroundsaid distributing device; said bricks having ribs on the backs thereofseated upon or against said horizontal and vertical portions of saidsupporting plate and spaced apart to provide air ducts leading from theinner edge of said fire-deck outwardly and upwardly into the combustionchamber.

10. In combination with the fire-box of a liquid fuel burner, afire-deck-supporting plate having a centrally disposed opening therein,a centrifugal fuel distributing device revolubly mounted within saidopening, a fire-deck mounted on said plate and comprising a circularseries of substantially horizontal fire-bricks combined with a series ofsubstantially vertical fire-bricks extend ing around said distributingdevice; said bI'lCkS having ribs on the backs thereof spaced apart andseated upon or against t e horizontal and vertical portions of saidsupporting plate; .the latter forming the outer walls of airducts formedby and between said ribs; said distributing device being adapted todischarge a film of oil over the surfa"e of said fire-deck, and meansassociated therewith for inducing an upwardly and outwardly movingcurrent of air and dividing and forcingthe same partly into and throughsaid air ducts and partly under .the film of oil issuing from theperiphery of said distributing device.

In testimony whereof I, aflix my signature.

JOHN SGHEMINGER, Ja

